Détails:Two T&G Aviation DC-7 planes were to be flown from Senegal to Morocco for a locust control mission there.Both aircraft were following their flight plan on airway Red 975 at an altitude of 11,000 feet and were flying 1.5 miles apart. Both aircraft were attacked and hit by SAM-7 surface-to-air missiles fired by the Polisario. The lead aircraft (N284) lost one of its engines and part of a wing and crashed. The second aircraft (N90804) lost an engine and suffered other damage, but it was able to land at Sidi Ifni, on the Moroccan coast. Polisario soldiers thought the DC-7s were Moroccan military C-130 aircraft.